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-rw-r--r--src/modules/m_spanningtree/capab.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/modules/m_spanningtree/capab.cpp b/src/modules/m_spanningtree/capab.cpp
index 04df62a1f..8d8afcbcc 100644
--- a/src/modules/m_spanningtree/capab.cpp
+++ b/src/modules/m_spanningtree/capab.cpp
@@ -80,7 +80,7 @@ namespace
stdalgo::map::difference(mymodules, remote.value(), modulediff);
std::ostringstream diffconfig, localmissing, remotemissing;
- for (auto& [module, values] : modulediff)
+ for (const auto& [module, values] : modulediff)
{
if (values.first && values.second)
{